Mold



Dec. 4,l 1928.

R. J. WEAVER V MOLD 2 sheets-shewL 1 47 2 IUI v ;W d WI 4 5| Hl: A|||||,-!-- am? 2M'- 19 m a .l 4 m ,n/ E 9. w/

Dec. 4,. 1928.

R. J. WEAVER MOLD original Filed Maren z,

1926 2 Sheets-Sheet 2 attoz wat J Patented Dec. 4, 1928.

UNITEDHSTATES PATENT OFFICE.

IALPH J. WEAVER, OF AKRON, OHIO, ASSIGNOR, BY .MESNE'ASSIGNMENT TO NA- TIONAL RUBBER MACHINERY COMPANY, OF

Omo.

AKRON, OHIO, A CORPORATION OF MOLD.

Application led March 3, 1926, Serial No. 91,871. Renewed October 10, 1928.

This invention relates to molds especially adapted for the manufacture of batteryboxes from hard rubber or similar compos1 tions.

It is one of the objects of the invention to provide a mold structure that will be adapted for the commercial manufacture of batteryboXes, or similar articles, on a commercial scale and at a relatively low cost. A further object of the invention is to provide a mold construction that will be comparatively simple and have its parts so arranged that the articles may be readily removed without liability of breakage. A further object of the invention is to provide a mold struct-ure that will have the necessary steam spaces and suitable provisions for .circulating steam about thesides of the mold cavities.

Other objects of the invention and the features of novelty will be apparent fro-m the following description taken in connection with the accompanying drawings of which Fig. 1 is a plan view of a mold embodying my invention 'n z5 Fig. 2 is a horizor tal section through the same;

Fig. 3 is a side elevation, on a reduced scale, with certain parts shown in section;

Fig. 4 is a side elevation of the movable top l0 of the mold which carries the cores, certa-in parts being shown in section; Fig. 5 is a plan View of the Same, on a re duced Scale;

Fig. 6 is an elevation of the mold top, as 5 seen from the left side of Fig. 4, certain parts being shown in section; and

F ig. 7 is a transverse section of themold on lthe line 7--7 ofz-Fig. 3.

Referring to` thel drawings, 10 indicates u the body casting which is provided with two mold cavities 11 and 12, the body casting havingthe jacket spaces 13, 14 and 15 in its walls. The upper ends of the jacket spa-ces are closed by integral Walls as indicated at 16 but the 5 lower ends of these jacket spaces extend to the lower side of the casting and merge into the bottom jacket spaces 17. A steel pla-te 18 is arranged on the bottom of the body casting and covers the jacket spaces, this plate having .i itsperiphery welded tothe body casting as indicated at 19. Y

The mold cavities extend to theends of the body casting and are closed by the end plates 20 and 21 which are hinged, at theirv 5 lower ends, as indicated at 22. The end together and to plates 20 and 21 are hollowed out, on their outer sides, to form the jacket spaces 23 and these spaces are closed by means of' plates 24 which are Welded to the end plates as inflicated at 25. The end plates 20 and 21 are also formed with internal ribs 26 which serve to circula-te the steam throughA the spaces 23 in a most effective manner. Ribs 27 are also rovided in the jacket spaces 13, 14 and 15 for the purpose of tieing the Walls of these spaces assist in the distribution of the steam. f

Each of the mold cavities 11 and 12 is lined with plates 28, 29, 30 and 31, which are suitably shaped to produce the article desired. A The hinged endy plates 20 and 21`also carry plates 32 forming one side of the article. The

' plates 31 are permanently secured in the mold cavities but the plates 28, 29 and 30 are removable, With the article, when the latter is withdrawn. The plates 32, being mounted on the end plates 20and 21, move with the latter. The plates 29; and 30 are each provided with a recess'33 and the body casting is provided with openings 34 which register with the recesses 33,. and permit the insertion of hooks which are adapted to engage with the recesses 33 for the purpose of pulling out the plates 29 and 30, when the end plates 20 and 21 are thrown down to their open posi' tion.

Heavy bars 34 and 35 are permanently attached to opposite sides of the body casting 10 and extend beyond the ends thereof. These bars are provided with aligned notches 36 adjacent their ends to receive the trunnions 37 of the cam members 38 which are adapted to engage theouter sides of the end plates 20 and 21 for the purpose of securing the latter against the body castingtoclose the molds. One, or both, of the trunnions 37 of each cam member 38, may be provided with a squared extension 39 adapted to receive a wrench for the purpose of rotating the cam member.

The top of the mold is closed by a plate 40 10o which carries the core members 41 that are adapted to enter the mold cavities and form the cells of the battery-boxes, the spaces 42 between the core members forming the partitions between the cells. The core members 10a 41 have their upper ends arranged in rectangular openings in the plate 40 and secured by means of a Wedge 43, blocks 43 being provided between the cores for properly spacing them. Each of the core members 41 is pref- 110 erably made hollowsto provide steam spaces into each of which there extends a pipe '44 for the purpose lof removing the condensation. Steam may-be admitted'to the interior of the core members 41 by means of a supply pipe 45 and partitions 46 are provided for the purpose of causing the steam to circulate therein.

The plate 40 has downwardly projecting guide rods 47 which( are adapted to enter openings 48 in the bars 34 and 35 for thevpurpose of properly registering the plate 40 with the body of the mold.

In the operation of the mold it is placed in a press, of the usual type, the plate 4() being 'bolted to lthe upper stationarymember of the press. The end walls and 21 are closed, andasec'ured by the cam members 38, and the proper amount of material is placed in the Ingld cavities. The jacket spaces are conneted with a steam supply, by suitable pipes, (notfshown) and draln pipes are also provided for carrying away the condensation from the jacket Spaces, according to usual practice. The plunger of the press is raised to close the top plate 40 against the top of' lthe body casting and to properly position the core members 41 in the mold cavities, this operation forcing the material into all parts `down to the horizontal position as shown in Figure 3, thereby permitting hooks to be -in serted in the openings 34 for the purpose of withdrawing the plates 28,129 and with the article adhering thereto. These plates are then detached from the articley and replaced in the mold cavities and the operation repeated.

I claim is:

hat In molds, the combination of a main body having a cavity for the article to be molded,

and a plunger plate for closing one side of' said cavity, said plate having an opening therein, a plurality of cores positioned in said opening and adapted to cooperate with said cavity, and a wedge for securing said cores in said opening.

In testimony whereofI hereunto aix my signature.v

RALPH J. WEAVER. 

